search for: mpreferred

On Fri, Nov 3, 2017, at 05:47, Craig Topper via llvm-dev wrote: > That's a very good point about the ordering of the command line options. > gcc's current implementation treats -mprefer-avx256 has "prefer 256 over > 512" and -mprefer-avx128 as "prefer 128 over 256". Which feels weird for > other reasons, but has less of an ordering ambiguity. > >

On Thu, Nov 2, 2017 at 7:05 PM James Y Knight via llvm-dev < llvm-dev at lists.llvm.org> wrote: > On Wed, Nov 1, 2017 at 7:35 PM, Craig Topper via llvm-dev < > llvm-dev at lists.llvm.org> wrote: > >> Hello all, >> >> >> >> I would like to propose adding the -mprefer-avx256 and -mprefer-avx128 >> command line flags supported by latest GCC to

I agree that a less x86 specific command line makes sense. I've been having an internal discussions with gcc folks and their evaluating switching to something like -mprefer-vector-width=128/256/512/none Based on the current performance data we're seeing, we think we need to ultimately default skylake-avx512 to -mprefer-vector-width=256. If we go with a target independent

Are you referring to the X86TargetLowering::isFsqrtCheap hook? ~Craig On Fri, Nov 10, 2017 at 7:39 AM, Sanjay Patel <spatel at rotateright.com> wrote: > We can tie a user preference / override to a CPU model. We do something > like that for square root estimates already (although it does use a > SubtargetFeature currently for x86; ideally, we'd key that off of something >

Hello all, I would like to propose adding the -mprefer-avx256 and -mprefer-avx128 command line flags supported by latest GCC to clang. These flags will be used to limit the vector register size presented by TTI to the vectorizers. The backend will still be able to use wider registers for code written using the instrinsics in x86intrin.h. And the backend will still be able to use AVX512VL

If skylake is that bad at AVX2 it belongs in -mcpu / -march IMO. Most people will build for the standard x86_64-pc-linux or whatever anyway, and completely ignore the change. This will mainly affect those who build their own software and optimize for their system, and lots there have probably caught on to this already. I always thought that's what -march was made for, really. GNOMETOYS

...home/wayne/wine2/wine/dlls' make[2]: Entering directory `/home/wayne/wine2/wine/dlls/ntdll' make[2]: *** Warning: File `../../memory/atom.c' has modification time in the future (2002-10-04 19:45:00 > 2002-10-04 17:55:05) gcc -c -I. -I. -I../../include -I../../include -g -O2 -Wall -mpreferred-stack-boundary=2 -fPIC -D__WINE__ -D_NTSYSTEM_ -DBINDIR="\"/usr/local/bin\"" -DETCDIR="\"/usr/local/etc\"" -D_REENTRANT -o ../../memory/atom.o ../../memory/atom.c gcc -c -I. -I. -I../../include -I../../include -g -O2 -Wall -mpreferred-stack-boundary=2...

On Sat, Nov 11, 2017 at 8:52 PM, Hal Finkel via llvm-dev < llvm-dev at lists.llvm.org> wrote: > > On 11/11/2017 09:52 PM, UE US via llvm-dev wrote: > > If skylake is that bad at AVX2 > > > I don't think this says anything negative about AVX2, but AVX-512. > > it belongs in -mcpu / -march IMO. > > > No. We'd still want to enable the architectural

On 11/13/2017 05:49 PM, Eric Christopher wrote: > > > On Mon, Nov 13, 2017 at 2:15 PM Craig Topper via llvm-dev > <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote: > > On Sat, Nov 11, 2017 at 8:52 PM, Hal Finkel via llvm-dev > <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote: > > > On

I haven't looked into actually implementing revectorization, so we may just want to ignore that possibility for now. But I imagined that revectorization could hit the same problem that we're trying to avoid here: if the cost models say that wider vectors are legal and cheaper, but the reality is that perf will suffer when using those wider vectors, then we want to avoid using the wider

...This got me future then running as a user ,"which would not run at all", but stills has problems. When i run wineinstall now it starts doing its magic but stops with this error. Compiling regedit... gcc -c -I. -I. -I../../include -I../../include -I../../include/msvcrt -g -O2 -Wall -mpreferred-stack-boundary=2 -fPIC -DSTRICT -DNONAMELESSUNION -DNONAMELESSSTRUCT -D_REENTRANT -o regedit.o regedit.c gcc -c -I. -I. -I../../include -I../../include -I../../include/msvcrt -g -O2 -Wall -mpreferred-stack-boundary=2 -fPIC -DSTRICT -DNONAMELESSUNION -DNONAMELESSSTRUCT -D_REENTRANT -o regproc...

When i run make, in the wine directory, i have the followin errors: gcc -c -I. -I. -I../../include -I../../include -g -O2 -Wall -mpreferred-stack-boundary=2 -fPIC -D__WINE__ -D_REENTRANT -o riched32.dll.dbg.o riched32.dll.dbg.c ld -r charlist.o reader.o text-writer.o richedit.o riched32.dll.dbg.o -o riched32.dll.tmp.o strip --strip-unneeded riched32.dll.tmp.o LD_LIBRARY_PATH="../../library:../../unicode:$LD_LIBRARY_PATH&quot...

Why can't I build wine? And why didn't ./configure catch it? ....... ....... ....... gcc -c -I. -I. -I../include -I../include -g -O2 -Wall -mpreferred-stack-boundary=2 -fPIC -D__WINE__ -D_REENTRANT -I/usr/X11R6/include -o ts_xresource.o ts_xresource.c gcc -c -I. -I. -I../include -I../include -g -O2 -Wall -mpreferred-stack-boundary=2 -fPIC -D__WINE__ -D_REENTRANT -I/usr/X11R6/include -o ts_xvideo.o ts_xvideo.c gcc -c -I. -I. -I../include -I../inc...

...nfigured for i686-pc-linux-gnu Source directory: . Installation directory: /usr/local C compiler: gcc -D__NO_MATH_INLINES -mieee-fp -O2 \ -pipe -s -mpentiumpro -mcpu=pentiumpro -march=pentiumpro -mieee-fp \ -malign-loops=2 -malign-jumps=2 -malign-functions=2 \ -mpreferred-stack-boundary=2 C++ compiler: g++ -mieee-fp -O2 -pipe -s -mpentiumpro \ -mcpu=pentiumpro -march=pentiumpro -mieee-fp -malign-loops=2 \ -malign-jumps=2 -malign-functions=2 -mpreferred-stack-boundary=2 FORTRAN compiler: g77 -O2 -pipe -s -mpentiumpro \ -mcpu=pentiumpro...

Hi ! After download latest version from cvs compile fails: make[2]: Entering directory `/backup/privat/emulator/wine/dlls/activeds' gcc -c -I. -I. -I../../include -I../../include -D__WINESRC__ -D_REENTRANT -fPIC -Wall -pipe -mpreferred-stack-boundary=2 -fno-strict-aliasing -gstabs+ -Wpointer-arith -g -O2 -o activeds_main.o activeds_main.c ../../tools/winebuild/winebuild -D__WINESRC__ -o activeds.dll.dbg.c --debug -C. activeds_main.c gcc -c -I. -I. -I../../include -I../../include -D__WINESRC__ -D_REENTRANT -fPIC -Wall -p...

wxRuby 0.6.0 has been released and is now available for download from RubyForge at http://wxruby.rubyforge.org/ This release includes binary builds for Max OS X and MS Windows. Changes in this release include: * Additional widget support in XRC (thanks to Marshall Elfstrand) * Addition of wxScrollbar (thanks to Hans Harmon of Pinnacle Technologies Inc) * Addition of wxGrid event handlers (thanks

...e -Wcast-qual -fformat-extensions -ansi -nostdinc -I- -I. -I/vol/vol0/users/des/tinderbox/RELENG_4/i386/pc98/src/sys -I/vol/vol0/users/des/tinderbox/RELENG_4/i386/pc98/src/sys/../include -I/vol/vol0/users/des/tinderbox/RELENG_4/i386/pc98/src/sys/contrib/ipfilter -D_KERNEL -include opt_global.h -mpreferred-stack-boundary=2 /vol/vol0/users/des/tinderbox/RELENG_4/i386/pc98/src/sys/kern/tty_tty.c cc -c -O -pipe -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual -fformat-extensions -ansi -nostdinc -I- -I. -I/vol/vol0/users/des/tinde...

...des/tinderbox/RELENG_4/i386/i386/src/sys -I/vol/vol0/users/des/tinderbox/RELENG_4/i386/i386/src/sys/../include -I/vol/vol0/users/des/tinderbox/RELENG_4/i386/i386/src/sys/contrib/dev/acpica -I/vol/vol0/users/des/tinderbox/RELENG_4/i386/i386/src/sys/contrib/ipfilter -D_KERNEL -include opt_global.h -mpreferred-stack-boundary=2 /vol/vol0/users/des/tinderbox/RELENG_4/i386/i386/src/sys/vm/vm_glue.c cc -c -O -pipe -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual -fformat-extensions -ansi -nostdinc -I- -I. -I/vol/vol0/users/des/tinderb...

Hello all. The latest version of wine (both CVS and tarball) doesn't compile on my machine (2.6.13 kernel, gcc 3.3.4). I get an error in dlls/wldap32: gcc -c -I. -I. -I../../include -I../../include -D__WINESRC__ -D_REENTRANT -fPIC -Wall -pipe -mpreferred-stack-boundary=2 -fno-strict-aliasing -gstabs+ -Wpointer-arith -g -O2 -o add.o add.c In file included from add.c:39: winldap_private.h:289: error: parse error before "BerElement" winldap_private.h:290: error: parse error before "BerElement" winldap_private.h:322: error: parse...

Tried to compile 0.9.0 with kernel 2.4.6 on a RH7.1 machine with the latest gcc updates installed. gcc -D__KERNEL__ -I/usr/src/linux/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer -fno-strict-aliasing -pipe -mpreferred-stack-boundary=2 -march=k6 -c -o sysctl.o sysctl.c sysctl.c:317: `journal_oom_retry' undeclared here (not in a function) sysctl.c:317: initializer element is not constant sysctl.c:317: (near initialization for `fs_table[14].data') make[2]: *** [sysctl.o] Error 1 Klaasjan Brand kjb@dds....